evangelism no more?

i often wonder what many people and leaders and hard-core evangelists would do if the entire world got "saved." that is, if they all came to know Christ and believe by faith that He was, and is God. what would people preach on then? would we just twiddle our thumbs, and pray for the rapture to come? i'm saying this b/c a lot of time, i feel like people enjoying one another gets downplayed as not as "important" as it really is (in terms of the Church and its overall mission). if i'm called to love my enemy yet i can't stand to even be in the same room with him/her, what's the point in the world being saved if we can't enjoy God's rich blessings upon us as redeemed ones under Christ? just a thought.